Phys. Rev. Lett. 63, 2551–2554 (1989)Evidence for radial-energy scaling of nonequilibrium neutron yield in damped 139Ar reactionsReceived 14 August 1989; published in the issue dated 4 December 1989 Emission patterns of neutrons from damped 139La+40Ar reactions at Elab=400 and 600 MeV, mostly consistent with sequential evaporation from accelerated fragments, reveal the existence of a high-energy component at all kinetic energy losses. The average multiplicity associated with this nonequilibrium component is found to scale with the radial kinetic energy at contact, with a threshold of Erad≊2 MeV/nucleon. Boltzmann-master-equation and Fermi-jet models disagree with the data, the latter model requiring enhanced high-momentum components. © 1989 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.63.2551
DOI:
10.1103/PhysRevLett.63.2551
PACS:
25.70.Lm
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.